Atom Fock-state preparation by trap reduction

被引:19
作者
del Campo, A. [1 ,2 ,3 ]
Muga, J. G. [3 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Inst Math Sci, London SW7 2PE, England
[2] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, QOLS, London SW7 2BW, England
[3] Univ Basque Country, Dept Quim Fis, E-48080 Bilbao, Spain
来源
PHYSICAL REVIEW A | 2008年 / 78卷 / 02期
关键词
D O I
10.1103/PhysRevA.78.023412
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We study the production of low-atom-number Fock states by sudden reduction of the potential trap in a one-dimensional strongly interacting (Tonks-Girardeau) gas. The fidelity of the Fock-state preparation is characterized by the average and variance of the number of trapped atoms. Two different methods are considered: making the trap shallower (atom culling [Dudarev et al., Phys. Rev. Lett. 98, 063001 (2007)], also termed "trap weakening" here) and making the trap narrower (trap squeezing). When used independently, the efficiency of both procedures is limited as a result of the truncation of the final state in momentum or position space with respect to the ideal atom-number state. However, their combination provides a robust and efficient strategy to create ideal Fock states.
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页数:6
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